.layout {
    height: 100%;
  }
  .header {
    display: flex;
    align-items: center;
    color: #fff;
  }
  .brand {
    font-size: 18px;
    flex: 1;
    color: #fff;
  }
  .content {
    padding: 20px;
    overflow: auto;
  }
  .avatar {
    cursor: pointer;
  }
  .username {
    margin-right: 20px;
    color: #fff;
  }